HI, I want to create automation flow where the campaigns will be using multiple delivery channels (sending domains). Kind of "domain warmup factory". I did preliminary test everything is working I can even regulate load on each Delivery Servers (Sending Domain). Only one thing I noticed the list-unsubscribe email will be always same./ Example: I am sending 10 email from email firstname.lastname@example.org and another 10 emails from email att@ domain2.net From email will be replaced by the delivery server from email automatically, which is perfect. But in the header of email received on att@ domain2.net ) I see always list-unsubscribe mailto: email@example.com . NOt sure if I configured something wrong if so advice on how to fix it ?. P.s. In Customer Group settings > Campaigns > "List unsubscribe header email" - I was not able to add [DS_FROM_EMAIL] placeholder .. so test it with the empty and got the same result if there is firstname.lastname@example.org . My point is it will be very strange from gamil/yahoo IA point of view if your sending email and list-unsubscribe email are from different domains, isn't it?